A patient asks the health care provider how a histamine2-receptor ...

[tsand2]

A patient asks the health care provider how a histamine2-receptor antagonist (H2RA) works. Which of the following responses should the health care provider offer?
 
  a. The drug neutralizes gastric acid.
  b. The drug coats the irritated gastric mucosa lining.
  c. The drug inhibits gastric acid secretion.
  d. The drug tightens the lower esophageal sphincter.

Question 2

Which of the following drugs would be of most benefit to a patient who is at risk for post-renal biopsy bleeding?
 
  a. Epoetin alfa (Epogen)
  b. Desmopressin (DDAVP)
  c. Calcitriol (Rocaltrol)
  d. Mannitol (Osmitrol)

[TDubDCFL]

Answer to Question 1

ANS: C
H2RAs inhibit the action of histamine at histamine2 (H2) receptors, thereby inhibiting gastric acid secretion and reducing total pepsin output. The resulting decrease in acid permits healing of ul-cerated areas.

Answer to Question 2

ANS: B
Desmopressin is effective in reversing the bleeding disorder present in uremia and is useful for the prevention of post-renal biopsy bleeding. It is also used in the management of diabetes in-sipidus caused by a deficiency of vasopressin and to control bleeding in certain types of hemo-philia and von Willebrand's disease (factor VIII deficiency).

[tsand2]

Gracias!

[TheNamesImani]

Excellent